Asolo TPS 535 Boot - Women's Leather Shaft measures approximately 8 from arch Boot opening measures approximately 12 around Upper: Water resistant full grain 2,6-2,8 mm Lining: Cambrelle Lasting Board: Asoflex 00 MR Anatomic Foootbed: Lite 2 Sole: Triple Power Structure Asolo/Vibram rubber-PU (dual-density)